CVE-2011-2705

The SecureRandom.random_bytes function in lib/securerandom.rb in Ruby before 1.8.7-p352 and 1.9.x before 1.9.2-p290 relies on PID values for initialization, which makes it easier for context-dependent attackers to predict the result string by leveraging knowledge of random strings obtained in an earlier process with the same PID.

• CWE-20

• https://lists.fedoraproject.org/pipermail/package-announce/2011-July/063062.htmlPatch
• https://lists.fedoraproject.org/pipermail/package-announce/2011-July/063071.html
• https://redmine.ruby-lang.org/issues/4579
• https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=32050Patch
• https://svn.ruby-lang.org/repos/ruby/tags/v1_8_7_352/ChangeLog
• https://svn.ruby-lang.org/repos/ruby/tags/v1_9_2_290/ChangeLog
• https://www.openwall.com/lists/oss-security/2011/07/11/1Patch
• https://www.openwall.com/lists/oss-security/2011/07/12/14Patch
• https://www.openwall.com/lists/oss-security/2011/07/20/1Patch
• https://www.openwall.com/lists/oss-security/2011/07/20/16Patch
• https://www.redhat.com/support/errata/RHSA-2011-1581.html
• https://www.ruby-lang.org/en/news/2011/07/02/ruby-1-8-7-p352-released/Patch
• https://www.ruby-lang.org/en/news/2011/07/15/ruby-1-9-2-p290-is-released/Patch
• https://www.securityfocus.com/bid/49015
• https://bugzilla.redhat.com/show_bug.cgi?id=722415Patch
• https://lists.fedoraproject.org/pipermail/package-announce/2011-July/063062.htmlPatch
• https://lists.fedoraproject.org/pipermail/package-announce/2011-July/063071.html
• https://redmine.ruby-lang.org/issues/4579
• https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=32050Patch
• https://svn.ruby-lang.org/repos/ruby/tags/v1_8_7_352/ChangeLog
• https://svn.ruby-lang.org/repos/ruby/tags/v1_9_2_290/ChangeLog
• https://www.openwall.com/lists/oss-security/2011/07/11/1Patch
• https://www.openwall.com/lists/oss-security/2011/07/12/14Patch
• https://www.openwall.com/lists/oss-security/2011/07/20/1Patch
• https://www.openwall.com/lists/oss-security/2011/07/20/16Patch
• https://www.redhat.com/support/errata/RHSA-2011-1581.html
• https://www.ruby-lang.org/en/news/2011/07/02/ruby-1-8-7-p352-released/Patch
• https://www.ruby-lang.org/en/news/2011/07/15/ruby-1-9-2-p290-is-released/Patch
• https://www.securityfocus.com/bid/49015
• https://bugzilla.redhat.com/show_bug.cgi?id=722415Patch

Published

Aug 5, 2011

Last Modified

Jun 16, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2011-2699The IPv6 implementation in the Linux kernel before 3.1 does …7.5
• CVE-2011-2700Multiple buffer overflows in the si4713_write_econtrol_strin…
• CVE-2011-2701The ocsp_check function in rlm_eap_tls.c in FreeRADIUS 2.1.1…
• CVE-2011-2702Integer signedness error in Glibc before 2.13 and eglibc bef…
• CVE-2011-2703Multiple SQL injection vulnerabilities in MapServer before 4…
• CVE-2011-2704Stack-based buffer overflow in MapServer before 4.10.7 and 5…
• CVE-2011-2706A Cross-Site Scripting (XSS) vulnerability exists in the reo…6.1
• CVE-2011-2707The ptrace_setxregs function in arch/xtensa/kernel/ptrace.c …6
• CVE-2011-2708Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultI…
• CVE-2011-2709libgssapi and libgssglue before 0.4 do not properly check pr…
• CVE-2011-2710Multiple cross-site scripting (XSS) vulnerabilities in Jooml…
• CVE-2011-2711Cross-site scripting (XSS) vulnerability in the print_filein…